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The Laws of Fiji

9.45 

9-45
Cables and wiring systems
9.45.1 Wiring systems

The following shall apply in addition to the wiring system requirements of AS/NZS 3000—

  • (a)Wiring systems supplying steering machinery, navigation lights, navigation and communication equipment, wiring systems in machinery spaces and wiring systems nominated in the emergency systems provisions of AS/NZS 3000 shall be of a type that are capable of satisfying the AS/NZS 3000 wiring systems requirements for emergency systems.

Note:

further guidance regarding wiring system classification and the fire performance of cables may be found in—

  • (i)The selection and installation of wiring systems and the emergency systems provisions of AS/NZS 3000;
  • (ii)AS/NZS 3013 Electrical installations – Classification of the fire and mechanical performance of wiring systems; and
  • (iii)AS/NZS 4507 Cables – Fire performance.
  • (b)In machinery spaces and on exposed decks cable fixing (ie saddles, clips, clamps, ties and straps) shall be of non-corrosive metal.
  • (c)Wiring systems and equipment onboard a ship shall be considered as ‘likely to be disturbed’.

NOTE:

AS/NZS 3000 provides the requirements for ‘wiring systems likely to be disturbed’.

9.45.2 Stranded conductors

All conductors in cables, with the exception of mineral-insulated metal sheathed (MIMS) cables, shall be of stranded, annealed copper, constructed in accordance with AS/NZS 1125. MIMS cables shall meet the requirements of AS/NZS 3187.

NOTE:

MIMS has limited application in the marine environment due to the risk of vibration and movement. Care should be taken to ensure that MIMS is used appropriately.

9.45.3 Connections

Cable connections and terminations shall be at fixed, enclosed terminals. All connections and terminations shall be accessible.

9.45.4 Penetration of bulkhead or deck
  • 9.45.4.1Where the routing of a cable requires the penetration of solid surfaces such as bulkheads or decks, the cable shall be effectively protected from mechanical damage.
  • 9.45.4.2Where the penetration is through a watertight or fire rated bulkhead or deck, the watertight and fire rated integrity of the bulkhead or deck shall be maintained.
  • 9.45.4.3Penetrations of refrigeration bulkheads or decks, or other insulated bulkheads or decks, shall be as close as practicable to perpendicular to the plane of the bulkhead or deck. Cable shall not be laid under thermal or sound insulation.
  • 9.45.4.4Glands and bushes used in bulkhead or deck penetrations shall be corrosion resistant.
  • 9.45.5Duplicate supply

    Where a duplicate or alternative supply is required (eg alternative supplies for the navigation light panel), the 2 cables shall be routed separately so as to avoid the risk of concurrent damage to both cables.